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EP0539531B1 - Dispositif pour la suppression de chutes de tension - Google Patents

Dispositif pour la suppression de chutes de tension Download PDF

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Publication number
EP0539531B1
EP0539531B1 EP19920905394 EP92905394A EP0539531B1 EP 0539531 B1 EP0539531 B1 EP 0539531B1 EP 19920905394 EP19920905394 EP 19920905394 EP 92905394 A EP92905394 A EP 92905394A EP 0539531 B1 EP0539531 B1 EP 0539531B1
Authority
EP
European Patent Office
Prior art keywords
voltage
lead
ignition switch
battery
diode
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP19920905394
Other languages
German (de)
English (en)
Other versions
EP0539531A1 (fr
Inventor
Hans Loistl
Jochen Bach
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0539531A1 publication Critical patent/EP0539531A1/fr
Application granted granted Critical
Publication of EP0539531B1 publication Critical patent/EP0539531B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
    • H02J2105/33—

Definitions

  • the invention relates to a device according to the preamble of the main claim.
  • ABS anti-lock braking systems
  • ASR traction control systems
  • a first input of the control device is continuously supplied with voltage via a first line. It is not intended to interrupt the voltage supply when the engine is switched off.
  • a second input of the control unit is supplied with a switched battery voltage via a second line.
  • the ignition switch is located between the battery and the control unit input.
  • the ignition switch is open and there is no voltage at the corresponding control unit input.
  • Such a voltage supply has proven to be advantageous since a motor vehicle has different consumers, some of which have to be constantly supplied with voltage, even when the engine is switched off, while others only have to be supplied with voltage during operation.
  • DE-P 40 41 620 has the disadvantage that in the event of malfunctions, for example in the event of brief voltage dips that can occur in the rough operation of a motor vehicle, the continuous voltage supply or switched battery voltage are interrupted in an impermissible manner for a short time and this Interruption then leads to a reset of the control unit. Since after such a reset a reinitialization of the microcomputer system of the control device is necessary, no control, for example of gasoline injection or ignition, can take place by the control device during this initialization time.
  • a voltage supply device for an electronic device is known from WO 91/00637, in which the electronic device is supplied with voltage from a battery via a first line. Furthermore, it is provided that an energy reserve, for example a capacitor, is also connected to the electronic device to be supplied via switching means, and for this purpose there is a second line which leads to the same connection of the electronic device as the first line. The energy reserve is always activated when a failure or a drop in the operating voltage is detected on the first line.
  • This known voltage supply device has the disadvantage that an additional energy reserve is required, the energy consumption of which must be monitored continuously so that any emptying of the energy reserve that may occur is reliably detected.
  • the device according to the invention for suppressing voltage dips with the characterizing features of the main claim has the advantage that the continuous voltage supply of the control unit is still maintained when a voltage dip occurs, since the voltage supply in this case via the second line, which carries the switched battery voltage, and the circuit arrangement arranged between these two lines takes place.
  • circuit arrangement that lies between the two lines can carry a high current and does not cause any significant voltage drop.
  • the circuit arrangement arranged between the two lines does not normally influence the voltage supply, that is to say if there are no voltage dips, this is a further advantage of the device according to the invention.
  • the positive connection of a battery BA is connected via a first line L1 to a first input E1 of a voltage regulator SP, which is part of a control unit SG. Furthermore, the positive connection of the battery BA is connected via a second line L2 and a series connection of a diode D2, a resistor R3 and a resistor R4 to a second input E2 of the voltage regulator SP, the ignition switch ZS being located between the battery BA and the diode D2 .
  • connection point between the resistors R3 and R4 is connected to ground via a capacitor C2, from the connection point between the ignition switch ZS and the anode of the diode D2 leads a further line L3 to the control unit SG.
  • the circuit arrangement according to the invention is located between the lines L1 and L2.
  • the anode of a Zener diode ZD is connected to line L1, its cathode is connected to one side of a resistor R1, the other side of which is connected to a capacitor C1, which in turn is connected to line L2, the connection point between the ignition switch ZS and the anode of the diode D2 is located.
  • a series connection of a resistor R2, the emitter-collector path of a transistor T1 and a diode D1 is connected in parallel with the series connection of the Zener diode ZD, the resistor R1 and the capacitor C1 between the lines L1 and L2, with the anode of the diode D1 on the line L2 is connected and the cathode of the diode D1 to the collector of the transistor T1.
  • the base of the transistor T1 is connected to the connection point between the cathode of the Zener diode ZD and the resistor R1.
  • the voltage regulator SP internally has at least one circuit, which is not specified in any more detail, which is symbolically represented as a resistor R5 and lies between the input E1 and the output A1 connected to the control unit SG. Furthermore, the input El is connected to a pole of a switch S, the other pole of which is led to the output A2 via a circuit which is symbolized by R6. A2 leads to the control unit SG. The switch S is controlled via the input E2 of the voltage regulator SP.
  • the voltage regulator SP of the control device SG is continuously connected to the battery BA via the line L1.
  • this line L1 depending on the state of line L2, supplies the part of the SG which must be supplied when the ignition switch ZS is closed.
  • control unit or the downstream consumers are supplied with a switched battery voltage via the second line L2.
  • This switched battery voltage is passed on to the voltage regulator SP via the ignition switch ZS; when the engine is switched off, that is to say when the ignition switch is open, the voltage supply to the voltage regulator SP is interrupted. This input switches off the part of the voltage regulator that should be de-energized when the motor is switched off.
  • control unit Since brief voltage drops can occur again and again during operation of the motor vehicle, for example when additional consumers are switched on or due to loose contact, there is a risk that the control unit will reset and thus reinitialize the microcomputer system when such a voltage drop occurs. The control unit cannot control the ignition or injection during this initialization time.
  • the maximum permissible interruption time is determined by the dimensioning of the capacitor C1 or by the corresponding charging time to the voltage resulting from the mesh rule. The following applies: UB -UC1, ZUL - UR1 - UBE - UR2> UE1, MIN
  • control unit SG thus remains switched on, its voltage supply via branch D1, T1, R2 remains.
  • the control unit is switched off.
  • the transistor T1 blocks, thus interrupting the voltage supply at the input E1 from line L2.
  • the control device is again supplied via the permanent voltage supply via the line L1, the capacitor C1 is discharged via the Zener diode ZD and the protective resistor R1.
  • the Zener diode also has the task. to effect a current limitation together with the resistor R2 when the transistor T1 is in the on state.
  • the diode D1 prevents the voltage regulator from being switched on via the Zener diode ZD and the base-collector path of the transistor T1 from line 1 (continuous voltage supply).
  • the circuit part connected to the line L2, with the diode D2, the resistors R3 and R4 and the capacitor C2 serves to bridge short-term voltage dips in the switched voltage (UE2). If such a voltage drop occurs, the diode D2 prevents the discharge of the capacitor C2 via the resistor R3.

Landscapes

  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electronic Switches (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Stand-By Power Supply Arrangements (AREA)
  • Direct Current Feeding And Distribution (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)

Abstract

Il est décrit un dispositif pour la suppression de chutes de tension dans des appareils connectés par au moins deux câbles à une batterie, l'un des câbles servant à l'alimentation permanente en tension, et l'autre pouvant être mis en et hors circuit par l'intermédiaire d'un interrupteur. Afin que des chutes de tension susceptibles de se produire du côté alimentation permanente en tension n'aient pas d'effets négatifs sur l'alimentation en tension de l'appareil, l'alimentation permanente en tension est assurée, en présence de chutes de tension et lorsque l'interrupteur est fermé, par l'intermédiaire d'un circuit situé entre les deux câbles, par l'autre câble mis en circuit.

Claims (6)

  1. Installation pour supprimer les coupures de tension d'appareils (SG) dont l'alimentation en tension se fait par au moins deux lignes (L1, L2), reliées à une borne d'une batterie (BA),
    caractérisée en ce que
    les deux lignes sont reliées aux bornes de l'appareil et, entre les deux lignes, se trouve un circuit ayant un montage en série comprenant une diode Zener (ZD), une résistance (R1) et un condensateur (C1),
    en parallèle à ce circuit série, on a un montage en série comprenant une résistance (R2), le chemin émetteur-collecteur d'un transistor (T2) et une diode (D1),
    - la base du transistor (T1) est reliée à la cathode de la diode Zener (ZD) dont l'anode est reliée à la première ligne (L1), l'anode de la diode (D1) étant reliée à la seconde ligne (L2), et
    - le transistor (T1) établit par le condensateur (C1), pendant l'occurrence d'une chute de tension sur la première ligne (L1), une liaison avec la seconde ligne (L2).
  2. Installation selon la revendication 1,
    caractérisée en ce que
    l'appareil est un appareil de commande (SG) d'un véhicule, la première ligne (L1) relie en permanence l'appareil de commande (SG) à la batterie (BA) et la seconde ligne (L2) peut être reliée à la batterie par un moyen de commutation, de préférence le commutateur d'allumage (ZS).
  3. Installation selon la revendication 1 ou 2,
    caractérisée en ce que
    l'appareil comporte un régulateur de tension (SP) ayant une première borne (E1) reliée par la ligne (L1) à la batterie (BA) et une seconde borne (E2) reliée par la ligne (L2) au commutateur d'allumage (ZS), et un autre moyen de commutation (S) qui est également fermé lorsque le commutateur d'allumage est fermé.
  4. Installation selon la revendication 3,
    caractérisée en ce que
    l'interrupteur d'allumage (ZS) est relié à l'entrée (E2) du régulateur de tension (SP) par l'intermédiaire d'un élément RC (R3, R4, C2).
  5. Installation selon la revendication 4,
    caractérisée par
    une diode (D2) entre le commutateur d'allumage (ZS) et l'élément RC (R3, R4, C2), l'anode de la diode étant reliée au commutateur d'allumage (ZS).
  6. Installation selon l'une des revendications précédentes,
    caractérisée en ce que
    le pôle du commutateur d'allumage (ZS) non situé du côté de la batterie est relié à l'appareil de commande (SG) par une autre ligne (L3).
EP19920905394 1991-03-23 1992-02-21 Dispositif pour la suppression de chutes de tension Expired - Lifetime EP0539531B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4109645A DE4109645A1 (de) 1991-03-23 1991-03-23 Einrichtung zur unterdrueckung von spannungseinbruechen
DE4109645 1991-03-23
PCT/DE1992/000126 WO1992016992A1 (fr) 1991-03-23 1992-02-21 Dispositif pour la suppression de chutes de tension

Publications (2)

Publication Number Publication Date
EP0539531A1 EP0539531A1 (fr) 1993-05-05
EP0539531B1 true EP0539531B1 (fr) 1996-08-14

Family

ID=6428081

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19920905394 Expired - Lifetime EP0539531B1 (fr) 1991-03-23 1992-02-21 Dispositif pour la suppression de chutes de tension

Country Status (5)

Country Link
US (1) US5414304A (fr)
EP (1) EP0539531B1 (fr)
JP (1) JPH05507840A (fr)
DE (2) DE4109645A1 (fr)
WO (1) WO1992016992A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19602171A1 (de) * 1996-01-23 1997-07-24 Teves Gmbh Alfred Beschaltung eines Spannungsreglers im Bordnetz eines Kfz's
JP3672524B2 (ja) * 2001-11-15 2005-07-20 住友電工ブレーキシステムズ株式会社 車載走行制御装置のアクチュエータ用電源供給回路
DE102008008160A1 (de) * 2008-02-08 2009-08-13 Conti Temic Microelectronic Gmbh Verfahren zur Versorgung einer elektrischen Baugruppe in einem Fahrzeug aus einem Gleichspannungsbordnetz
WO2012051265A1 (fr) * 2010-10-12 2012-04-19 Heartware, Inc. Alimentation électrique avec tolérance des pannes
DE102015218167A1 (de) 2015-09-22 2017-03-23 Bayerische Motoren Werke Ag Verfahren zur Spannungsstabilisierung in einem Fahrzeugbordnetz
DE102015219950A1 (de) 2015-10-14 2017-04-20 Bayerische Motoren Werke Aktiengesellschaft Verfahren und Vorrichtung zur Spannungsstabilisierung in einem Fahrzeugbordnetz

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55125037A (en) * 1979-03-20 1980-09-26 Nissan Motor Electronic device power supply circuit for vehicle
US4342922A (en) * 1981-02-05 1982-08-03 General Electric Company AC Fail-detect and battery switchover circuit for multi-bus power supply
US4698578A (en) * 1986-05-27 1987-10-06 Gates Energy Products Circuit for supplying energy from a battery to an energy-using device
JPH02246740A (ja) * 1989-03-16 1990-10-02 Toshiba Corp 電源バックアップ回路
DE3920713A1 (de) * 1989-06-24 1991-01-10 Bosch Gmbh Robert Insassen-sicherheitseinrichtung fuer fahrzeuge
DE3921305A1 (de) * 1989-06-29 1991-01-10 Bosch Gmbh Robert Spannungsversorgungseinrichtung fuer ein elektronisches geraet
DE4041620C2 (de) * 1990-12-22 2003-02-20 Bosch Gmbh Robert Einrichtung zur Spannungsversorgung bei Geräten mit Nachlauf

Also Published As

Publication number Publication date
US5414304A (en) 1995-05-09
WO1992016992A1 (fr) 1992-10-01
EP0539531A1 (fr) 1993-05-05
DE4109645A1 (de) 1992-09-24
DE59206906D1 (de) 1996-09-19
JPH05507840A (ja) 1993-11-04

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